Table 1. Hydrogen-bond geometry (Å, °).

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H1⋯N3	0.87 (1)	2.15 (1)	2.988 (2)	161 (2)
O2—H2⋯O1	0.84 (1)	1.71 (1)	2.554 (2)	176 (3)